Table 2

Patient characteristics

Patient		Sex, age (y)		Studied hip				Opposite hip		Aetiological factors		ON volume (%)		Histological type	Status (at 2 years)		Outcome
Patient		Sex, age (y)		Symptoms	Radiological stage			Symptoms	Radiological stage	Aetiological factors		ON volume (%)		Histological type	Symptoms	Radiological stage	Outcome	Treatment
1	M, 35	No	2		Yes	3	Alcohol	32	II	No	2	Conservative	Good
2	F, 56	No	2		Yes	3	Alcohol + CS	54	II	Worse	3	THR	Bad
3	M, 35	No	2		Yes	3	CS	18	IV	No	2	Conservative	Good
4	M, 48	Yes	2		Yes	3	CS	33	IV	Worse	3	THR	Bad
5	M, 63	Yes	2		No	Normal	Gout + CS	38	III	Worse	3	THR	Bad
6	M, 26	No	2		Yes	3	Alcohol	26	II	No	2	Conservative	Good
7	M, 40	Yes	2		Yes	3	Alcohol	21	IV	Improved	2	Conservative	Good
8	M, 57	Yes	2		Yes	3	CS	55	III	Worse	4	THR	Bad
9	F, 50	Yes	2		No	1	SLE, CS	10	II	No	2	Conservative	Good
10	M, 60	Yes	2		Yes	3	SLE, CS	18	III	Worse	2	THR	Bad
11	M, 39	No	2		Yes	3	Alcohol	5	II	No	2	Conservative	Good
12	M, 36	Yes	2		No	2	Alcohol	90	III	Worse	3	THR	Bad
13 R	M, 42	No	2		—	—	CS	19	III	No	2	Conservative	Good
13 L	M, 42	Yes	2		—	—	—	43	IV	Improved	3	Conservative	Bad
14	M, 43	No	2		Yes	3	Alcohol	22	III	No	2	Conservative	Good
15 R	M, 38	Yes	2		—	—	Alcohol + CS	30	IV	Worse	3	THR	Bad
15 L	M, 38	No	2		—	—	—	32	IV	Worse	3	THR	Bad
16	M, 39	Yes	2		Yes	3	Alcohol	41	IV	No	2	Conservative	Good
17	M, 38	No	2		Yes	3	Alcohol + CS	23	II	No	2	Conservative	Good
18	M, 31	Yes	2		Yes	3	Alcohol	56	II	Worse	3	THR	Bad

Radiological stage, according to Ficat.11 CS = corticosteroids. ON volume (%), according to Holman et al.10 Histological type, according to Arlet and Durroux.12 THR = total hip replacement. Outcome = “good” = no radiological deterioration; “bad” = increase in Ficat stage.